| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.syncope.core.provisioning.camel; |
| |
| import java.io.ByteArrayInputStream; |
| import java.nio.charset.StandardCharsets; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import org.apache.camel.component.metrics.routepolicy.MetricsRoutePolicyFactory; |
| import org.apache.camel.model.RoutesDefinition; |
| import org.apache.camel.spring.SpringCamelContext; |
| import org.apache.camel.xml.jaxb.JaxbHelper; |
| import org.apache.syncope.core.persistence.api.dao.CamelRouteDAO; |
| import org.apache.syncope.core.persistence.api.entity.CamelRoute; |
| import org.apache.syncope.core.spring.ApplicationContextProvider; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.transaction.annotation.Propagation; |
| import org.springframework.transaction.annotation.Transactional; |
| |
| public class SyncopeCamelContext { |
| |
| protected static final Logger LOG = LoggerFactory.getLogger(SyncopeCamelContext.class); |
| |
| protected final CamelRouteDAO routeDAO; |
| |
| public SyncopeCamelContext(final CamelRouteDAO routeDAO) { |
| this.routeDAO = routeDAO; |
| } |
| |
| protected SpringCamelContext camelContext; |
| |
| public SpringCamelContext getCamelContext() { |
| synchronized (this) { |
| if (camelContext == null) { |
| camelContext = ApplicationContextProvider.getBeanFactory().getBean(SpringCamelContext.class); |
| camelContext.addRoutePolicyFactory(new MetricsRoutePolicyFactory()); |
| } |
| |
| if (camelContext.getRoutes().isEmpty()) { |
| List<CamelRoute> routes = routeDAO.findAll(); |
| LOG.debug("{} route(s) are going to be loaded ", routes.size()); |
| |
| loadRouteDefinitions(routes.stream().map(CamelRoute::getContent).collect(Collectors.toList())); |
| } |
| } |
| |
| return camelContext; |
| } |
| |
| protected void loadRouteDefinitions(final List<String> routes) { |
| try { |
| RoutesDefinition routeDefs = JaxbHelper.loadRoutesDefinition( |
| camelContext, |
| new ByteArrayInputStream(("<routes xmlns=\"http://camel.apache.org/schema/spring\">" |
| + routes.stream().collect(Collectors.joining()) |
| + "</routes>").getBytes(StandardCharsets.UTF_8))); |
| camelContext.addRouteDefinitions(routeDefs.getRoutes()); |
| } catch (Exception e) { |
| LOG.error("While adding route definitions into Camel Context {}", camelContext, e); |
| throw new CamelException(e); |
| } |
| } |
| |
| @Transactional(propagation = Propagation.SUPPORTS) |
| public void updateContext(final String routeKey) { |
| if (!getCamelContext().getRouteDefinitions().isEmpty()) { |
| getCamelContext().getRouteDefinitions().remove(getCamelContext().getRouteDefinition(routeKey)); |
| loadRouteDefinitions(List.of(routeDAO.find(routeKey).getContent())); |
| } |
| } |
| |
| public void restoreRoute(final String routeKey, final String routeContent) { |
| try { |
| getCamelContext().getRouteDefinitions().remove(getCamelContext().getRouteDefinition(routeKey)); |
| loadRouteDefinitions(List.of(routeContent)); |
| } catch (Exception e) { |
| LOG.error("While restoring Camel route {}", routeKey, e); |
| throw new CamelException(e); |
| } |
| } |
| |
| public void restartContext() { |
| try { |
| getCamelContext().stop(); |
| getCamelContext().start(); |
| } catch (Exception e) { |
| LOG.error("While restarting Camel context", e); |
| throw new CamelException(e); |
| } |
| } |
| } |